The 26-year-old is now free to return to action for both club and country, if required, given he could yet feature in Scotland's Six Nations campaign despite missing initial selection.

Wilson pleaded not guilty to the offence, with independent judicial officer Simon Thomas effectively throwing out the case.

"As the judicial officer was not satisfied to the required standard that the act of foul play as alleged had been committed, the citing complaint was dismissed and Wilson is therefore free to play," read a statement from European Professional Club Rugby (EPCR).

Wilson could have faced a minimum 12-week ban had he been found guilty of the offence, but is now free to return to action without delay.

Swinson was sin-binned for the incident, and pleaded guilty to the offence in Wednesday's disciplinary hearing in London.

Independent judicial officer Simon Thomas deemed the offence worthy of a red card, and imposed a suspension of two weeks that was then halved due to the guilty plea, Swinson's remorse and clean disciplinary record.

Swinson is free to play from Monday, January 25, allowing the 28-year-old to take full part in Scotland's Six Nations campaign.